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Occurrence and health risk assessment of trace heavy metals via groundwater in Shizhuyuan Polymetallic

Bingbing XU,Qiujin XU,Cunzhen LIANG,Li LI,Lijia JIANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 482-493 doi: 10.1007/s11783-014-0675-8

Abstract: In particular, this study focused on the exposure and the health risk assessment of trace heavy metal

Keywords: groundwater     heavy metal     health risk assessment     mine area    

Stabilization-based soil remediation should consider long-term challenges

Zhengtao Shen, Zhen Li, Daniel S. Alessi

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-018-1028-9

Abstract: Soil remediation is of increasing importance globally, especially in developing countries. Among available remediation options, stabilization, which aims to immobilize contaminants within soil, has considerable advantages, including that it is cost-effective, versatile, sustainable, rapid, and often results in less secondary pollution. However, there are emerging challenges regarding the long-term performance of the technology, which may be affected by a range of environmental factors. These challenges stem from a research gap regarding the development of accurate, quantitative laboratory simulations of long-term conditions, whereby laboratory accelerated aging methods could be normalized to real field conditions. Therefore, field trials coupled with long-term monitoring are critical to further verify conditions under which stabilization is effective. Sustainability is also an important factor affecting the long-term stability of site remediation. It is hence important to consider these challenges to develop an optimized application of stabilization technology in soil remediation.

Keywords: Stabilization     Soil remediation     Long-term     Trace metals    

Assessment of mobile and potential mobile trace elements extractability in calcareous soils using different

Mohsen Jalali, Ziba Hurseresht

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1186-4

Abstract: In NH4OAc, DTPA, and EDTA, the possibility of re-adsorption of trace elements is low.Understanding trace elements mobility in soils, extracting agents, and their relationships with soilwhereas NaNO3 and CaCl2 have shown different behavior than other extracting agents for all studied traceThe speciation of extracted trace elements in solutions indicated that in the CaCl2, NaNO3, NH4NO3, andThe results of speciation of trace elements using NH4OAc, DTPA, and EDTA extracting agents showed that

Keywords: Mobility     Calcareous soils     Extracting agents     Trace elements    

Preconcentration of trace elements by adsorption onto a niobium wire for electrothermal atomization atomic

Satoshi KANECO, Hiroaki KITANAGA, Hideyuki KATSUMATA, Tohru SUZUKI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 432-435 doi: 10.1007/s11705-012-1219-z

Abstract: In the present work, a new preconcentration method of trace elements by adsorption onto a niobium wire

Keywords: onto niobium wire     electrothermal atomization atomic absorption spectrometry     tungsten tube atomizer     trace    

Assessing human bioaccessibility of trace contaminants in size-fractionated red mud, derived precipitates

Chunfeng Wang, Yanchen Zhu, Dan Yao, Guanfei Chen, Lianjun Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0956-0

Abstract: The objective of this study was to provide insight into human exposure to trace contaminants bearingThe in vitro bioaccessibility behavior of trace contaminants was investigated with the PBET (physiologicallyThe results showed that total contents of trace contaminants and operation parameters, such as pH andAs for airborne particles (<38 µm size fractions), trace contaminants concentrations extracted by MGSEven though short-term and long-term leaching values of trace contaminants were relatively lower in the

Keywords: Bioaccessibility     Trace contaminants     Red mud     Precipitates     Geopolymeric blocks.    

The energy-free purification of trace thallium(I)-contaminated potable water using a high-selective filter

Frontiers of Chemical Science and Engineering doi: 10.1007/s11705-023-2379-8

Abstract: Thallium is a highly toxic metal, and trace amount of thallium(I) (Tl+) in potable water could

Keywords: membrane adsorption     Prussian blue     energy-free filtration     potable water     trace thallium(I)    

Biodegradation of trace pharmaceutical substances in wastewater by a membrane bioreactor

Longli BO, Taro URASE, Xiaochang WANG

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 236-240 doi: 10.1007/s11783-009-0004-9

Abstract: The biodegradation of selected pharmaceutical micropollutants, including two pharmaceuticals with argued biodegradation, was studied by a lab-scale membrane bioreactor. The reaction kinetics and affecting factors were also investigated in this paper. Clofibric acid (CA) with contradictive biodegradation reported was degraded almost completely at different hydraulic retention times (HRTs) after adaptation to microorganisms. The biodegradation of CA was disturbed at low pH operation, while the activity of microorganisms recovered again after pH adjustment to neutral condition. Ibuprofen (IBP) degraded under neutral and acidic conditions. Removals of IBP and CA were zero-order and first-order reactions under high and low initial concentrations, respectively. Carbamazepine and diclofenac were not degraded regardless of HRTs and pH.

Keywords: pharmaceuticals     membrane bioreactor     activated sludge     reaction kinetics    

PSS sorbents for removing trace hydrogen sulfide in methane

Limei ZHONG, Li ZHOU

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 339-342 doi: 10.1007/s11705-010-0569-7

Abstract: Sorbents of the pressure swing sorption process (PSS) to remove trace amount of H S (190 ppm) contained

Keywords: pressure swing sorption     H2S     methane     carrier     absorbent    

ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 437-447 doi: 10.15302/J-FASE-2023507

Abstract:

● Content of heavy metals in hydrochar varies considerably, from 50%

Keywords: heavy metals     dairy manure     hydrochar     hydrothermal carbonization     waste management    

Error compensation for tool-tip trace during cutting of laminated paper for rapid prototyping

Yucheng DING, Changhe LI, Dichen LI, Guoxin YU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 111-119 doi: 10.1007/s11465-009-0020-2

Abstract: Laminated object manufacturing (LOM) is one of the commercialized rapid prototyping (RP) processes, where a focused laser is usually used to cut the cross-section contours of a 3 D part and the grid hatchings of the part-exterior region on a sheet paper stack-wise. Using a laser beam as a cutter can be costly, and the thermal burning of a sheet paper along a laser scanning path can also cause an environment-polluting smoke. This paper presents a paper laminating RP system using a knife as the paper cutter instead of a laser beam. The knife holder is mounted through a radial bearing on the - positioning mechanism in such a way that the knife tip is eccentric to the bearing axis by a small distance (so-called offset). Therefore, the knife tip, which engages into the sheet paper during cutting, tends to follow the path of the -driven bearing axis by the error that depends on the path tangential and the eccentricity of the knife tip. A tractrix model is applied to describe the kinetic motion of the knife tip and a method is formulated to compensate for the tracing error of the eccentric knife tip by modifying the original cross-section contours of the part for each layer based on the tractrix equation. A study has also been performed regarding the effect of the knife tip geometry on the cutting notch of the sheet paper and on the roughness of the finished part.

Keywords: rapid prototyping     laminated object manufacturing     knife-cutting     tracing error    

Research progress in removal of trace carbon dioxide from closed spaces

ZHANG Yatao, FAN Lihai, ZHANG Lin, CHEN Huanlin

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 310-316 doi: 10.1007/s11705-007-0057-x

Abstract: In this paper, the removal of trace carbon dioxide from closed spaces through membrane process and biotransformation

Keywords: removal efficiency     consumption     removal     CO removal     membrane microalgae    

Degradation of trace nitrobenzene in water by microwave-enhanced H

Honghu ZENG, Lanjing LU, Meina LIANG, Jie LIU, Yanghong LI

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 477-483 doi: 10.1007/s11783-012-0395-x

Abstract: To evaluate possible use of microwave-enhanced H O -based (MW/H O ) process to degrade trace nitrobenzene

Keywords: microwave     hydrogen peroxide     nitrobenzene     humic acid    

Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 93-102 doi: 10.1007/s11783-014-0704-7

Abstract: However, the major disadvantage of water hyacinth composting is the high content of heavy metals in thelime sludge significantly reduced most bioavailable fractions (exchangeable and carbonate) of heavy metalsTessier sequential extraction method was employed to investigate the changes in speciation of heavy metalsEffects of physicochemical parameters such as temperature, pH and organic matter on speciation of heavy metalsAddition of lime was very effective for reduction of bioavailability of heavy metals during composting

Keywords: composting     lime     heavy metals     bioavailability factor     speciation    

Preliminary study of trace element emissions and control during coal combustion

ZHANG Junying, ZHAO Yongchun, DING Feng, ZENG Hancai, ZHENG Chuguang

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 273-279 doi: 10.1007/s11708-007-0038-2

Abstract: Hazardous trace element emissions have caused serious harm to human health in China.Several typical high-toxic trace element coals were collected from different districts and were usedto investigate the emission characteristics of toxic trace elements (As, Se, Cr, Hg) and to explore preliminaryThe chemical composition and trace element contents of ash and particulate matter (PM) were determined

Keywords: Pingdingshan     occurrence     plasma-atomic emission     chemical composition     Several typical    

Emerging roles of liquid metals in carbon neutrality

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 393-396 doi: 10.1007/s11708-022-0829-5

Title Author Date Type Operation

Occurrence and health risk assessment of trace heavy metals via groundwater in Shizhuyuan Polymetallic

Bingbing XU,Qiujin XU,Cunzhen LIANG,Li LI,Lijia JIANG

Journal Article

Stabilization-based soil remediation should consider long-term challenges

Zhengtao Shen, Zhen Li, Daniel S. Alessi

Journal Article

Assessment of mobile and potential mobile trace elements extractability in calcareous soils using different

Mohsen Jalali, Ziba Hurseresht

Journal Article

Preconcentration of trace elements by adsorption onto a niobium wire for electrothermal atomization atomic

Satoshi KANECO, Hiroaki KITANAGA, Hideyuki KATSUMATA, Tohru SUZUKI

Journal Article

Assessing human bioaccessibility of trace contaminants in size-fractionated red mud, derived precipitates

Chunfeng Wang, Yanchen Zhu, Dan Yao, Guanfei Chen, Lianjun Wang

Journal Article

The energy-free purification of trace thallium(I)-contaminated potable water using a high-selective filter

Journal Article

Biodegradation of trace pharmaceutical substances in wastewater by a membrane bioreactor

Longli BO, Taro URASE, Xiaochang WANG

Journal Article

PSS sorbents for removing trace hydrogen sulfide in methane

Limei ZHONG, Li ZHOU

Journal Article

ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Journal Article

Error compensation for tool-tip trace during cutting of laminated paper for rapid prototyping

Yucheng DING, Changhe LI, Dichen LI, Guoxin YU

Journal Article

Research progress in removal of trace carbon dioxide from closed spaces

ZHANG Yatao, FAN Lihai, ZHANG Lin, CHEN Huanlin

Journal Article

Degradation of trace nitrobenzene in water by microwave-enhanced H

Honghu ZENG, Lanjing LU, Meina LIANG, Jie LIU, Yanghong LI

Journal Article

Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

Journal Article

Preliminary study of trace element emissions and control during coal combustion

ZHANG Junying, ZHAO Yongchun, DING Feng, ZENG Hancai, ZHENG Chuguang

Journal Article

Emerging roles of liquid metals in carbon neutrality

Journal Article